So I went to my presidential suite to make sure I had all my globes before I merc'd Mr Haus and wow I see a shelf right above the snow globe stand with the Sierra Madre Globe sitting right on the left edge. I never expected this since the wiki only said it gives you 2000 caps and nothing more. So I took out a ruler and did a little math and concluded that the shelf can hold 4 snowglobes.

Does that mean there will be only 4 DLCs? time will only tell.

Only 4? FO3 only had 5, and O:A and MZ were barely expansions. From what I heard, Dead Money is about the size of Point Lookout, no? if not, then it must be at least as big as the Pit, definitely larger.

Seeing as how O:A and MZ were really just shootout expansions without huge amounts of quest scripting, I'd say having 4 expansions from Obsidian would be better than the 5 from Bethesda.

There may of course be DLC without new areas. Technically Operation: Anchorage didn't introduce a new city, area or settlement. Or something like Broken Steel without Adams Air Force Base.

Also I can't seem to control myself when it comes to killing House. I don't think I have ever sold more than one snowglobe to Jane before killing House and removing the option to turn in the globes. There really should be an alternative to selling them to Jane.

You get 2000 Sierra Madre Chips for it....which you can take to the Cashier at the Casino and exchange for 2000 Pre-War Moneys, worth 10-12 caps each in the Mojave...making it worth 20,000 caps if you play it right.

Six is what I speculate, there are enough places for it. (That seem to be built for it.